Practice Problems

Daily Challenge: Paths Around the Walls (1500) Solve it to start a streak

Practice Problems

ProblemTopics Solvers Acceptance Difficulty
Remove a Perfect Power dp games 0 — 1800
The Centroid dp trees 0 — 1800
Walks on a Triangle combinatorics matrix-exponentiation 0 — 1800
Strings with an Even Number of Zeros combinatorics matrix-exponentiation 0 — 1800
Remove Three, Four, or Five dp games 0 — 1800
Remove an Even Number dp games 0 — 1800
Remove One or a Perfect Square dp games 0 — 1800
Walks on a Pentagon graphs matrix-exponentiation 0 — 1800
Walks on K4 graphs matrix-exponentiation 0 — 1800
Walks on a Path of 6 graphs matrix-exponentiation 0 — 1800
Walks on a Star graphs matrix-exponentiation 0 — 1800
Walks on a Cube graphs matrix-exponentiation 0 — 1800
Longest Stable Window sliding-window deque 0 — 1800
Closed Walks on Square Cycle graphs matrix-exponentiation 0 — 1800
Closed Walks on Hexagon graphs matrix-exponentiation 0 — 1800
Closed Walks on Path of Four graphs matrix-exponentiation 0 — 1800
Closed Walks on Path of Five graphs matrix-exponentiation 0 — 1800
Closed Walks on K5 graphs matrix-exponentiation 0 — 1800
Closed Walks on Wheel W4 graphs matrix-exponentiation 0 — 1800
Closed Walks on Wheel W5 graphs matrix-exponentiation 0 — 1800
Closed Walks on Bipartite K33 graphs matrix-exponentiation 0 — 1800
Closed Walks on Heptagon graphs matrix-exponentiation 0 — 1800
Closed Walks on Octagon graphs matrix-exponentiation 0 — 1800
Closed Walks on Path of Seven graphs matrix-exponentiation 0 — 1800
Closed Walks on 2x3 Grid graphs matrix-exponentiation 0 — 1800
Closed Walks on Bowtie graphs matrix-exponentiation 0 — 1800
Subtraction Game {1,2,3} game-theory grundy 0 — 1800
Subtraction Game {1,3,5} game-theory grundy 0 — 1800
Subtraction Game {2,4,6} game-theory grundy 0 — 1800
Subtraction Game {1,2,4} game-theory grundy 0 — 1800
Subtraction Game {2,3,6} game-theory grundy 0 — 1800
Subtraction Game {1,4} game-theory grundy 0 — 1800
Subtraction Game {2,5} game-theory grundy 0 — 1800
Subtraction Game {1,3,7} game-theory grundy 0 — 1800
Closed Walks on Path of Three graphs matrix-exponentiation 0 — 1800
Closed Walks on Wheel W6 graphs matrix-exponentiation 0 — 1800
Closed Walks on Star S5 graphs matrix-exponentiation 0 — 1800
Closed Walks on Triangular Prism graphs matrix-exponentiation 0 — 1800
Climbing Stairs (1,2,3) dp matrix-exponentiation 0 — 1800
Closed Walks on Nonagon graphs matrix-exponentiation 0 — 1800
Closed Walks on Decagon graphs matrix-exponentiation 0 — 1800
Closed Walks on Path of Eight graphs matrix-exponentiation 0 — 1800
Closed Walks on K6 graphs matrix-exponentiation 0 — 1800
Closed Walks on Wheel W7 graphs matrix-exponentiation 0 — 1800
Components over Time union-find 0 — 1850
Still Two Teams? graphs union-find 0 — 1850
When Did We Meet binary-search union-find offline 0 — 1850
Largest Rectangle in a Histogram stack 0 — 1900
The K-th One, Under Fire binary-search fenwick 0 — 1900
Leftmost Big Enough segment-tree 0 — 1900